Radio control mechanism



Jan. 17, 1928. 1,656,178

A. DI sTAslo RADIO CONTROL MECHANI SM Filg Noy, 3.. 1926 2 sheets-sheet l &6 Z

I fwerzzor A. Dl STASIO Jan. 17, 1928.

RADIO CONTROL MECHANI SM Patented Jaa. 17, 192s.

UNITED STATES ANTONIO DI STASIO, OF NEW YORK, N. Y.

RADIO CONTROL MECHANISM.

.Application led November 30, 1926. Serial No. 151,752.

This invention relates to means for con- `trolling and operating radio apparatus, particularly receiving sets and the apparatus contained therein and adapted to'centralize a plurality of normally independent operable means .for control by single mechanism.

The invention comprehends the provision of a unitary manually operable control means having a plurality of movements, each 'm of which is utilized for independent control of predetermined parts of a radio set in order that the lament and loud speaker or other reproducer circuits may be independently controlled in a desired manner with the 3f, simultaneous operation of the tuning adjustment for the tuning of the circuit or set in the usual manner.

The invention further comprehends the provision of a structure of the above mentioned character which is substantially simple, eiiicient in operation, and which may be y manufactured at a relatively small cost.

The invention comprehends vnumerous ether objects residing in the details of construction, and arrangement of ythe parts which are more particularly pointed out in the following detailed description and in the claims directed to a preferred form of the construction, it being understood however, to that various changes in the size, shape and relation of the parts may be made Without departing from the spirit or scope of the invention as herein set forth.

ln the drawings forming part of this ee application Figure 1 is a front'elevation of a portion of a radio set showing the operating knob and indicating dial used in conjunction with the operation of the present invention.

llig. 2 is a vertical longitudinal section taken approximately on the line 2--2 of Fig. l, showing the mechanism forming the subject matter of the present invention in side elevation and omitting the showing of conventional structure of the set.

Fig. 3 is a horizontal sectional view taken.

ing connections between the several terminals y and switch plugs carried thereby.

Fig. 7 is a detail taken substantially on the line 7--7 of Fig. 2, showing more particularly the construction of the operating pinions for the tuning apparatus.v

1 indicates the panel of a radio set to which is secured the usual base board 2 on which all of the instruments and apparatus comprised in a receiving circuit are usually mounted. A supporting shaft 3 is rotatably mounted at the forward end in the panel 1 and suitably mounted in any desired manner at the rear end thereof, preferably on the base board, not illustrated, which is adapted to mount a gang condenser or combined condensers and inductances movable for tuning cooperation in a 'plurality of radio receiving circuits, which are generally indicated by the dot and dash lines in Figs. 2 at 4.

This provides a single supporting shaft for all tuning elements of a receiving set. However, any other method of simultaneously operating all of a movable tuning element of a receiving set may be employed instead of a single supporting shaft as shown, and which is merely for the purpose of illustration. shaft is provided with an indicating pointer 5 which cooperates with the scale 6 on the front face of the panel l to indicate the tuning adjustments of the instruments carried or operated by said shaft 3.

The rear end portion of the shaft 3 is provided with an enlarged annular gear 'Z' rigidly secured thereto with which meshes the driving pinion 8 having cylindrical projections 9 from opposite sides thereof rotatably in the parallel arms 10 extending upwardly from the main supporting bracket 11. rlhe arms 10 are at the rear end of the supporting bracket 11 while'the forward end thereof extends and is provided with a lateral eX- tension 12 which is secured to the panel l-by a bushing 13 in turn forming a bearing for rotatably mounting the operating shaft l which is provided witha squared portion at its opposite end as indicated at 15 extending through a squared opening formed in the Ipinion structure and the cylindrical projection thereof as indicated at 16 in Fig?.

Adjacent the squared portion 15 and inwardly toward the central portion thereof the operating shaft lll is provided with a rlhe forward end of theo plurality of annular groovesv 17 with which cooperate the spring fingers 18 mounted at diametrically opposite'points on the cylin drical projection of the drive gear 8, and

which have their free ends adapted for cooperation with the annular grooves 17 as Y clearly illustrated in Fig. 2 in order to'retain the o erating shaft 14 in any one of a plurality ci) positions of slidable adjustment relative to the drive pinion.

A stop collar 19 is secured to the operating shaft or rod 14 for limiting the sliding movement thereof through the bushings 13, while the operating knob 20 on the free end of the shaft in front of the panel, provides a suitable means by which the shaft may be manl ually rotated or moved axially through the bushings in order to have the resilient fingers provide means for-receiving electric circuit,

' 18 seated in the desired recess 17 in the shaft.

A movable switch block 21 constructed of suitable insulating material is formed to receive in its upper ortion the operating shaft 14 to permit re ative rotation of said shaft in the block while the longitudinal or axial movement of the shaft is adapted to move the block therewith through the cooperation of the collars 22 with the opposite ends j of said block.; The lower portion of the vblock 21 is slidably received between the upwardly extending flanges 23 formed on the opposite side of. .the supporting bracket 11. vOne of the flanges' 23 is formed with a projection 24 to whichis secured a suitable insulating ,block 25 carrying a resilient contact 26 having the tendency tol move toward the'insulating block 21 for engagement with the contact bars 27 embedded in the face of said block or movable switch block.

Suitable terminal posts 28 extend through' the-opposite end portions of the -insulating bars 27 and serve to retain the same in recesses inthe movable switch block, and to connections for the contact bars. Terminal posts 29 are also mounted in the movable switch block adjacent the posts 28 for receiving other circuit connections of a desired character.

Terminal `jacks are mounted in and project from opposite ends of they movable -switch block as indicated at 30, particularly in Fig. 5, which include a shell electrode 31 and a center electrode 32 lsuitably insulated in a manner well known in the art inthe construction ofthe usual plug jacks or phone jacks, and which construction is preferably control the output circuits of a receiving set.

The units 35 and 36 are so arranged on the supportingbracket 1l as illustrated in Fig.

2, that only onejack cooperates with one of the units at a time, while in a desired position, the jacks are positioned, so that the circuits of both units are in the normal position ready for operation by either jack. The three annular grooves 17` in the operating shaft are lpositioned in such relation that the central groove is the position of the block member 21 when the jacks are in the central position, and the units 35 and 36 are not operated thereby, while the other grooves respective jacks for the respective units 35 and 36 depending upon the position of the operating shaft 14.

In operation, the resilient contact member 26 engages the bar contact 27 when'the block member is at either of its opposite limits of movemenhwhile in the central position, the

[represent the positionsf of operation of xthe.`

resilient contact 26 engages between said bar contacts, and circuits controlled thereby are open in said central position. y

A.' suitable insulating block 38 supports the rear end of the bracket 11 on the base board 2. With a construction such as illustrated in the drawings and 'above described, it will be readily understood that circuit connections for the A battery as well as the B battery and loud speaker terminal may be controlled by the units 35 and 36 in cooperation with the jacks 30 in the movement of the movable switch block 21, and with the further cooperation of the bar contacts '27 and the resilient contact 26. This controlling operation is affected through the actual movement'of Athe operating sha t 14 by pulling the knob out or pushing it in, so that the resilient fingers 18 cooperate with the desired annular groove 17 in the shaft,whi1e an off position is provided with the resilient iin ers 18'in.the1central annular groove 17.

n this way, a multitube receiving circuit may be controlled to interpo'se a loud speaker or other reproducerin circuit with the detector tube or in circuit with' all of the tubes of Jthe setl including audio frequency amplifying tubes according to the i position of the movable switch block 21 in controlling the jack units 35 and v36 and the 'pas circuits between the resilient contact 26 and bar contact 27. Any predetermined wiring connections may be made to obtain the desired type of control.

In addition, the rotation of the shaft 14 operating the drive pinion 8 and the spur gears 7 tunes the entire set and provides a single tuning control for a radio receiving set in addition to the circuit control features above referred to.

It will therefore be clearly understood that the present invention provides a unitary control member having a series of independ-4 ent movements adapted for use in affecting the control of a plurality of independent elements in a radio receiving set inorder to centralize all of the controls of a receiving set into a single control.

Having thus described my invention, what I claim as new is 1. A uni-control for radio receiving sets, wherein the receiving set includes a plurality of movable tuning elements, comprising opera-ted means carried by said elements, movable to produce adjustments thereof, drivingmeans for said operated means, a plu-l rality of circuit control units, movable means for operating said .circuit control units, and a single manually operable mechanism associated with said means and said driving means adapted to` independentl operate each of said means in a pre etermined manner. c

2. A uni-control for radio receiving sets, wherein the radio receiving set includes a plurality of independently movable instrul operating shaft rotatably and mounted in said supporting bracket, and

ments having driven means for simultaneouly moving saidfinstruments, driving means for operating said driven means, a supporting member operably mounting said driving means, a plurality of circuit control units carried by the supporting member in spaced relation, slidable means for operating said circuit control units carried by the supporting means, and a main operating control carried by the supporting means and associated ,with the slidable means and the driving means and independently operable in a plurality of directions for selectively operating said driving means and sliding means.

3. A uni-control for radio receiving sets, wherein the receiving set includes a plurality of independently movable instruments, comprising driven means carried by said instruments, a supporting bracket, driving means mounted in saidA supporting bracket and operably connected with said driven means for simultaneously operating the same, a plurality of circ-uit control units mounted on said supporting bracket, a block member slidable on said supporting bracket an slidably operably associated with the driving means and the slidable block member whereby axial movement of the shaft in the supporting.

bracket will operate said block member and rotatable movement of said operating means will operate the driving means.

In testimony whereof I ailix my signature.

AN'roNio DI sTAsIo. 

